baber/WOPTO huggingface dataset:
Patent GB-1354408-A (GB)
Title: Laboratory dispensing apparatus
IPC: B01L3/02
Filed: 1971-07-15
Abstract: 1354408 Raising liquids DYNATECH LABORATORIES Inc 15 July 1971 [18 Sept 1970] 33179/71 Heading F1R [Also in Division G1] Apparatus similar to that of 1305815 for picking up liquid in each of an assembly of pipettes 188 and then dispensing the liquid comprises for each pipette etc. Fig. 9 spring-loaded piston 156 the lower end of which bears on one face of a common diaphragm 160 and tubular section 174 with enlarged upper section 184 spring- loaded to bring annular flange 178 into contact with the other face of diaphragm 160, the upper end of each piston 156 having flange 168 in vacuum passage 152. Operation of a foot switch completes a circuit which enables vacuum to be applied in passage 152 via lines 142, 140, 144 Fig.7; diaphragm 160 moves upwardly and liquid is sucked into each pipette 188. When the vacuum passages are isolated then opened to atmosphere, liquid is dispensed from the pipettes. Operating pressure on the diaphragm is determined by the tightness of clamping together of plates 106, 102, 100. Release of clamps 130 enables removal of the pipette unit.
Patent GB-1175280-A (GB)
Title: Control System for Moving and Actuating Vehicle Headlights.
Inventor: IBEL RAYMOND AMANDUS DE
IPC: B60Q1/064
Filed: 1967-07-19
Abstract: 1,175,280. Valves. TRICO PRODUCTS CORP. 19 July, 1967 [20 July, 1966 (2)], No. 33244/67. Heading F2V. [Also in Division F4] A motor vehicle headlamp assembly 10 is retracted and advanced when switching on and off the lighting circuit through a switch 58. This switch may be in circuit with a solenoid pilot controlled valve 50, 56 which connects opposite sides of a diaphragm power device 24 selectively to a vacuum tank 68 connected to the engine induction 74, or to atmosphere. The servo valve 50 comprises a " D " slide valve 98 controlling ports 92, 96 to the power device and a port 94 to the tank 68. This valve is spring biased in a carrier 106 connected with a diaphragm 114 which is selectively connected to vacuum or atmosphere through the solenoid operated shuttle pilot valve 56. A vacuum supply port 128 is connected through the pilot valve to the diaphragm chamber at 126. The servo valve chamber is vented to atmosphere at 146 and this vent communicates with the diaphragm chamber through the other closure 137 of the shuttle valve. The servo valve can be manually locked in a position corresponding to retraction of the assembly 10. A spring catch (156), Fig. 6 (not shown), is pushed in to move and retain the diaphragm 114. In a modified system, Figs. 17-13 (not shown), the lighting switch (59a), Fig. 9, is manually coupled with a pilot valve (73a) which controls the servo valve (50), Fig. 8. The headlamps are retractable along with their shields by two single-acting power devices (241), and in the advanced position are locked by a diaphragm operated latch (236), Fig. 10. On opening the lighting circuit, this latch is first released and the system bleeds slowly through a bleeding tee (28a) so that retraction takes place without shock. In an other modification, Figs. 13-15 (not shown), a double-acting diaphragm operated servo valve is used, the pilot valve, Fig. 4 being provided with suitable connections. The device may operate auxiliary equipment on the vehicle other than the shields or headlamps.
Patent GB-838220-A (GB)
Title: Improvements in and relating to transductors
Inventor: BURNETT THOMAS BRIAN
IPC: H01F29/14
Filed: 1955-11-22
Abstract: 838,220. Magnetic amplifiers. ENGLISH ELECTRIC CO. Ltd. Nov. 15, 1956 [Nov. 22, 1955], No 33395/55. Class 40 (9). In a parallel-connected auto-self-excited amplifier with A.C. windings 11a, 11b, and associated rectifiers 12a, 12b, the rectifiers are shunted by impedance which decreases with increasing current. As shown, back-biased rectifiers 17a, 17b, connected in series with smoothing chokes 18a, 18b, or connected in shunt with capacitors, comprise the non-linear impedance. Alternatively a single non-linear impedance may be connected between the junctions of the rectifiers and their A.C. windings.
Patent GB-913618-A (GB)
Title: Automatic telephone exchanges
Inventor: CROWTHER GERALD OFFLEY
IPC: H04Q3/52
Filed: 1960-09-29
Abstract: 913,618. Automatic exchange systems. MULLARD Ltd. Sept. 9, 1960, No. 334602/60. Class 40 (4). In an exchange in which switching is effected by cold-cathode tubes a counterchain of cold-cathode trigger tubes which counts the dialled impulses is preceded by a pruning stage, and a counter release stage releases the counter chain when counting is completed. When a subscriber calls his line equipment produces a reduction in the voltage at point A (Fig. 2), whereupon the negative-going pulse gate NG applies a positive-going pulse to the trigger of a tube in the counter primer stage CP causing the tube to fire, and the negative-going gate DG applies a delayed negative-going step to the same trigger to prevent the tube firing to subsequent pulses from NG. When the caller dials the train of positive-going pulses which appears at A pass via the positive-going pulse gate PG and the pulse-shaper PS to step the counter chain CC, .firing of the first tube of which douses the CP tube. The chain CC passes the first pulse to a release bias stage RB (Fig. 3) wherein tube TRB is fired and applies positive bias to the trigger of a tube (not shown) in the counter release stage CR (Fig. 2). TRB also applies a positive-going output via delay stage BD (Fig. 3) to the trigger of tube TBT in the busy tone control stage BT. The delay imposed by BD is greater than the duration of the longest dial pulse train so that TBT cannot be triggered until after the end of such train. At the end of the train the counter chain CC effects seizure of the line equipment of the called party (if idle) and on the resulting fall in voltage at A the gate NG passes a positive-going voltage step to the primed tube in stage CR which then fires, thus dousing the fired tube of CC and the tube TRB. If the called party is busy the tube TBT is fired after an interval, thus causing reversion of busy tone to the caller, and the fall in voltage produced at A causes operation of the counter release stage CR, as above described. The gates NG, DG and PG may be of the form described in Specification 913,617.
Patent GB-1138773-A (GB)
Title: Cue bridge
IPC: A63D15/10
Filed: 1967-07-21
Abstract: 1,138,773. Cue bridge. W. J. ELLIS. 21 July, 1967 [2 Aug., 1966], No. 33534/67. Heading A6H. A cue bridge comprises a shaft and frame 4 attached at one end to a spring 3 fastened at its other end to the body 2 over which is fitted a handle 1 the body 2 and handle 1 being grooved to prevent independant rotation.
Patent GB-777206-A (GB)
Title: Improvements in or relating to cooling apparatus
Inventor: HUNT RAYMOND SIDNEY
IPC: A01J9/04
Filed: 1955-11-23
Abstract: 777,206. Refrigerating; cooling liquids in bulk. PRESSED STEEL CO., Ltd. Nov. 23, 1955, No. 33544/55. Classes 29 and 64(3) Liquid cooling apparatus comprises a first tank 10 for liquid to be cooled, a second tank 14 containing a liquid cooling medium in heat exchange with the liquid in the first tank, evaporator coils 19 disposed in the second tank to cool the cooling medium therein, and means 25 in the second tank for introducing air under pressure into the tank to agitate the liquid therein. The first tank 10 is disposed within the second tank 14, which preferably contains water, and has a sloping base 11 and a stirrer 30 for the liquid to be cooled. The evaporator coils 19 are held clear of the walls of each tank so that ice may be allowed to form on the coils to act as a cold holdover without interfering with the heat exchange between the liquids in the tanks. Compressed air is introduced into the tank 14 through a pipe 25 which has branch pipes 23 and 24, lying on the base of the tank, through which the air passes into the water before escaping from the tank through holes 27 and being led back to the compressor. The air compressor is preferably controlled by a thermostat responsive to the temperature of the liquid to be cooled.
Patent GB-939337-A (GB)
Title: Improvements in or relating to clicking dies
IPC: B26F1/46
Filed: 1962-08-31
Abstract: 939,337. Clicking knives. E. HOFFMANN. Aug. 31, 1962 [Sept. 4, 1961 ; Nov. 22, 1961], No. 33547/62. Class 31 (1). [Also in Group XXII] A clicking knife for cutting out shoe blanks comprises a template or core 1, of, e.g. press board, shaped to the part to be cut and secured by an adhesive, which remains elastic when dry, to the inner surface of a knife blade 2. Alternatively, a tape coated on both sides with an adhesive is used which is stuck around the periphery of the core prior to assembly within the knife blade 2. In another alternative, the core is surrounded by a metal band having a channel cross-section and the assembly retained within the knife by a metal adhesive. In order to obtain a wide contact surface for the adhesive the outer edge of the core is widened by splitting it in a longitudinal direction. Hollow punches 3 and perforators 4 and also drifts and knives (not shown) may be bonded to the core. The original template or a replica of same is used as the core.
Patent GB-940000-A (GB)
Title: Cable guide for suspended monorail systems, preferably for guiding on curves
IPC: B65G39/10
Filed: 1962-08-31
Abstract: 940,000. Rope guides. HEINRICH SCHARFG.m.b.H. Aug. 31, 1962 [Sept. 1, 1961], No. 33611/62. Class 104 (2).  A drive cable 5 is guided by rollers 4a, 4b, 4c, and 4d in a cruciform arrangement and one side of the upper roller 4a is formed as a toothed wheel so that the drive member 7 for the vehicle 2 may pass between adjacent teeth.
Patent GB-1464603-A (GB)
Title: Substituted organic photochromic compounds and processes for  their preparation
IPC: C07D409/06
Filed: 1974-07-31
Abstract: 1464603 Photochromic materials and uses thereof H G HELLER 2 July 1975 [31 July 1974] 33719/74 Heading C4S [Also in Division C2] The invention comprises photochromic compounds (I) and (II) in which A represents oxygen or NR<SP>4</SP> (where R<SP>4</SP> represents hydrogen, alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 12 carbon atoms, aralkyl having 7 to 9 carbon atoms, aryl having 6 to 14 carbon atoms, which may be substituted with one or more halogen or alkoxy groups having 1 to 20 carbon atoms, or alkaryl having 7 to 22 carbon atoms); B represents oxygen or sulphur; R<SP>1</SP> represents a hydrogen atom, an akyl group having 1 to 20 carbon atoms or an aryl group having 6 to 14 carbon atoms; R<SP>2</SP> and R<SP>3</SP> are the same or different alkyl groups having 1 to 20 carbon atoms or one of R<SP>2</SP> and R<SP>3</SP> is hydrogen and the other is an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 14 carbon atoms which may be substituted with one or more halogen atoms and/or any combination of groups selected from C 1-20  alkoxy and C 7-22  alkaryl, or is a methylenedioxy group, X represents hydrogen, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 14 carbon atoms or an aralkyl group having 7 to 12 carbon atoms; each Y is the same or different and represents a hydrogen or halogen atom, an alkyl or alkoxy group having 1 to 20 carbon atoms, or an aryl or aryloxy group having 6 to 14 carbon atoms, and their preparation, where A is oxygen, by reacting an aldehyde or ketone (III) or (IV) with a succinic ester (V) where R<SP>5</SP> is the residue of an alcohol, by a Stobbe condensation, hydrolysing the half-ester produced to form the di-acid, and then heating the said di-acid with an acid chloride, and where X is NR<SP>4</SP>, by reacting the corresponding compound, where X is oxygen with an amine R<SP>4</SP>NH 2  and heating the resulting half amide with an acid chloride or anhydride or by reacting the half ester from the Stobbe condensation with a compound R<SP>4</SP>NHMgBr and reacting the resulting succinamic acid with an acid chloride. The compounds of the invention develop colour when exposed to radiation in the near ultraviolet (e.g. 366-404 nm.) and the photo reverse process takes place in visible light optionally at 514-550 nm., or by heating. The compounds find use in information storage, holographic recording, telecopier devices using laser techniques and information display screens.
Patent GB-452897-A (GB)
Title: Improvements in punching machines
IPC: B26D7/01
Filed: 1935-12-05
Abstract: 452,897. Punching-machines. TRUSSEL MANUFACTURING CO., Poughkeepsie, New York, U.S.A. Dec. 5, 1935, No. 33778. Convention date, June 13. [Class 31 (ii)] [See also Group XVI] In a machine for punching holes in sheets, the sheet is positioned on a work table by a fixed front gauge, a movable back gauge and movable side gauges, and a common mechanism is provided for operating the three movable gauges and the punch or punches in definitely timed relation. The sheets 13 are removed by hand from a stacker 126, Fig. 3, having an inclined side 133 to stagger the sheets, and are placed on a table 17 where they are positioned by undercut side gauges 18, 19, a back gauge 14 and a front gauge 24, Fig. 6 ; they are then perforated by punches 87 and removed by hand to a stacker 127. The gauges 14, 18, 19 are adjustably secured to slides 29 movable in grooves 16, 22, 23 by screws 33 and slots 34, the screws engaging one of a number of holes 32 in the slides. The slides are actuated by levers 35, 36, 37 pivoted on studs 38, 39, 40 at the underside of the table and having pivoted links 41, 42, 43 connected to studs 44, 45, 46 on the slides. The levers are coupled together with lost motion by a link 65 having a slot 72, and a roller 68 and arm 70 and are urged towards their operative position by springs 58, 59, 60 from which they are withdrawn by a chain 50 controlled by a cam. The punches 87 reciprocate vertically in blocks 25 and have heads 84 engaged in a groove 83 in a row of blocks 80 whereby they are adjustable laterally. The blocks 80 are guided by short rollers 81 and a long roll 82 and are pivoted to a rockable member 76 by hinge tubes 79 bearing in blocks 78 attached to the member 76. Lubricant inserted in a hole 99 in a tube 79 issues between the tubes to oil the bearings. The member 76 is rocked about its shaft 109 by a pitman 74 connected to a crank on the shaft carrying the gauge controlling cam. When desired the gauge 18 may be fixed in a position in which it is not influenced by the cam, by engaging a screw 122 with holes 123, 124 in the slide 29 and groove 22. The other side gauge 19 and the back gauge 14 also remain stationary.
Patent GB-408053-A (GB)
Title: An improved protected metal article
IPC: C08L7/00
Filed: 1932-11-29
Abstract: A metal article is provided with a protective coating of rubber which is treated to render it fireproof by applying a layer of chlorinated-diphenyl rendered non-tacky by the incorporation of chinawood oil.ALSO:A metal article is provided with a protective coating of rubber which is treated to render it fireproof, weatherproof, and non-tacky.  A fire-resisting material such as chlorinated diphenyl, or a substance, e.g. calcium or magnesium carbonate, giving off non-inflammable gases at high temperatures, or a mixture of these, is incorporated in, or applied in a layer upon the surface of a sealed rubber envelope surrounding the metal article.  The envelope may be vulcanized and will have a non-tacky surface unless the fire-resisting material forms an outer layer, in which case a material such as china-wood oil is incorporated with it or applied as an outer layer.  The rubber composition may also include silica, zinc oxide, and the sulphur and an accelerator for vulcanization.  The layers may be deposited from solution or emulsion, or applied as calendered layers.
Patent GB-1475353-A (GB)
Title: Telephone system
IPC: H04M19/00
Filed: 1974-07-31
Abstract: 1475353 Automatic exchange systems RELIANCE TELECOMMUNICATION ELECTRONICS CO 31 July 1974 [12 Oct 1973] 33807/74 Heading H4K A relay having balanced windings 24, 25 is connected in series with the wires 19, 20 of a telephone line such that when the subset 34 is off-hook, the relay is operated to connect a resistor 22 across the wires at the exchange. The resistor reduces the loop resistance seen by the exchange power supply and therefore increases the current available for operating the exchange line equipment relays. The relay 18 may be of the split balanced magnetic reed type and the arrangement permits longer telephone lines to be employed.
Patent GB-1011405-A (GB)
Title: Improvements in a control system for a steam generator
IPC: F22B35/14
Filed: 1962-09-04
Abstract: 1,011,405. Starting forced flow steam boilers. GILBERT ASSOCIATES Inc. Sept. 4, 1962 [Sept. 5, 1961], No. 33834/62. Heading F4A. In a control system for starting a once through steam boiler, especially such a boiler wherein a signal increasing the firing rate according to a fixed starting programme may at any time be overridden by a signal representative of the rate of metal temperature rise at, for example, the superheater outlet header so as to hold this rate of rise within safe limits, a throttle and shut-off valve 9 is provided between the evaporator and superheater zones of the boiler to divert water-steam mixture to a flash tank 6 through a reducing valve 7. In operation steam liberated in the flash tank and the water drain therefrom may be conveyed to a feedwater heater 11, the surplus being delivered to a heat sump 10. Some of the steam may flow from the flash tank to the superheater through a check valve 8 to supplement steam which may be admitted to the superheater through the throttle valve 9. In a modification, Fig. 2 (not shown), the flash tank drain water flows through a reducing valve into a low pressure vessel whence it flows to the feedwater heater or heat sump.
Patent GB-1048557-A (GB)
Title: Loading ramp with changeable slope
IPC: B65G69/28
Filed: 1963-08-27
Abstract: 1,048,557. Loading ramps. E. WICHMANN and R. SCHMINKE. Aug. 27, 1963 [Sept. 4, 1962], No. 33860/63. Heading B8E. A vehicle loading platform 1 is pivotally mounted at 5, 6 in a masonry structure 7 or in a movable case. The slope of the platform may be varied between the positions 1<SP>1</SP>, 1<SP>11</SP> to bring its end 24 on to the floor of a vehicle by the engagement of an eccentric disc 11, driven by a motor 2 through a speed reducer 13, with a roller 8 mounted on a shaft 9 on the underside of the platform. A dumping device 19 is pivoted at 16, 22 respectively to the platform and to a pit 21. The damping device may alternatively be m the form of an hydraulic or compressed air jack and when the device is mounted in a case the latter may be provided with wheels to simplify its transport.
Patent GB-786129-A (GB)
Title: Improvements relating to the cooling of sintered and other loose solid materials of industrial processes
Inventor: MEREDITH JAMES WILLIAM
IPC: C10B39/02
Filed: 1955-11-28
Abstract: 786,129. Cooling sintered &c. materials. HUNTINGTON HEBERLEIN & CO., Ltd. May 18, 1956 [Nov. 28, 1955], No. 34043/55. Class 51 (2). [Also in Group XXX] Apparatus for cooling loose material such as sintered ore or coke comprises an endless movable series of pans 10 carried by chains built up of pairs of pivotal links 12 and running on rails 13, each pan having upper grate members 21 spaced from the bottom 18 and formed with sets of slots 22 for the cooling air alternating with transverse imperforate sections 23 each such section being associated with dependent flanges 24 forming the side walls of an air conduit 20. Slots 19 in the bottom of each pan allow the entry of air into the conduits 20 as the pans pass over an air chamber 36, the air passing through openings 25 in the flanges 24 into the spaces 28 below the slots 22. The conduits 20 are closed at their rear ends by a sloping rear wall 26 of the grate section and at their front ends by a vertical wall 27, the ends of the spaces 28 being open, at the rear through slots 22 in the wall 26, and at the front through breaks in the wall 27. These spaces 28 act as fires compartments, and, as the pans pass over end sprockets or rollers 16, the fires are discharged, with the bulk of the cooled material, into a hopper 39. The bottoms and sides of the pans overlap one another at 17 and the grate members are secured to the pan by bolts 31. The rear end of each grate section may have a vertical wall instead of the sloping wall 26, Fig. 11 (not shown), and air conduits 20 may be provided only at the sides of the grate, Fig. 12 (not shown). In a further modification, Fig. 13 (not shown), a single air conduit 20 extends across the grate sections forming also a single fires compartment 28. The air conduits 20 may also run at an inclination to the sides of the pans, Fig. 16 (not shown).
Patent GB-352867-A (GB)
Title: Improvements in or relating to apparatus with rotating coil system and dry plate rectifiers for measuring alternating current and voltage
IPC: G01R19/22
Filed: 1930-11-12
Abstract: 352,867. Current and pressure meters ; static contact rectifiers; compensating instruments for temperature errors. SIEMENS & HALSKE AKT.- GES., Siemensstadt, Berlin. Nov. 12, 1930, No. 34087. Convention date, Nov. 21, 1929. [Class 37.] An alternating current or voltage is measured by means of a moving-coil instrument 5 and a copper oxide rectifier 4, temperature errors being minimized by limiting the effective surface of the rectifier plates to 1À5 sq. cm. or less and keeping the current density between 2À5 and 29 milliamperes per sq. cm.
Patent GB-815453-A (GB)
Title: Improvements in or relating to windscreen wipers
IPC: B60S1/38
Filed: 1957-11-01
Abstract: 815,453. Windscreen cleaners. GENERAL MOTORS CORPORATION. Nov. 1, 1957 [Nov. 23, 1956], No. 34140/57. Class 138(1). A windscreen wiper blade 18 has a tapered flexible backing strip 25 which allows the blade to flex in a plane normal to the windscreen but makes it inflexible in a plane at right angles thereto. A support consisting of a primary yoke 13 and a spring-biased cantilever arm 15 are attached to the backing strip 25 by means of spring clips with hooked ends 29 which pass through slots 26 into cavities 23 within the rubber blade. One such slot 26a is made smaller than the others as that relative movement between the support and the backing strip is prevented. Tilting of the blade during operation is avoided by providing the spring clips with surfaces 31 which engage the backing strip. In a modification, the cavities are formed by a longitudinal opening which is closed by a backing strip with spaced slots to receive the spring clips.
Patent GB-1413232-A (GB)
Title: Hydrocarbon cracking catalyst composition
IPC: B01J21/16
Filed: 1973-07-18
Abstract: 1413232 Cracking catalyst W R GRACE & CO 18 July 1973 [19 July 1972] 34259/73 Heading B1E [Also in Division C5]  A cracking catalyst composition comprises synthetic silica-magnesia-fluoride admixed with 20-40% wt. clay. The composition may also contain a zeolite, e.g. rare earth exchanged type Y or type X zeolites or hydrogen- or metalexchanged faujasites. Suitably, the silica-magnesia-fluoride component comprises 60-92% silica, 8-40% magnesia and up to 6% fluoride. The catalyst may have a surface area of 300- 600 m<SP>2</SP>/g after calcining at 1000‹F, and of 125 to 300 m<SP>2</SP>/g after steaming and a pore volume of 0.4-0.8 cc/g. The clay may be kaolin, bentonite, halloysite, montmorillonite or atarpulgite and, suitably, has an average particle size of 0.5 to 2.0 microns.